Composition for refrigerator-linings, &amp;c.



UNITED TAUEE iill ldtii CHARLES H. SEAMAN, OF MILXVAUKEE, WISCONSIN,ASSIGNOIR TO OTTO H. FQERSIIEEt,

' OF MILWAUKEE, WISCONSIN.

GMIEOSITION FOB REFRIGERATOR-LININGS, 6w.

No Drawing.

To all whom it may concern Be it known that I, CHARLES HiSEAMAN, acitizen of the United States, residing at lllilwaukee, in thecounty ofMilwaukee and State of lVisconsin, have invented a certain new and.useful Improvement in Composition for Refrigerator-Linings, &c., ofwhich the following is a full, clear, concise, and exact description.

My invention relates to a. new composition of matter which is ofparticular use for refrigerator linings: although the same may beotherwise very satisfactorily employed.

In constructing the material I mix certain ingredients to form a hard,strong substance which may be cast and otherwise worked into formsdesired for commercial purposes. In the description herein 1 willconfine myself particularly to the application of my invention to sucharticles as .refrigerator linings, although as before stated my invention is not so limited in its scope.

It is a prime object of my invention to provide a material for shapedbodies, such as refrigerator linings, which maybe formed into hollowrectangular box-like structures having either one or two of the ordinarysix sides omitted, which box-like structure may be then inserted withinordinary refrigerators as the lining thereof, and which may serve at thesame time as the heat insulating medium necessary for properrefrigeration.

These box-like structures may have a size of the rectangular sides,possibly from one to three feet square and it is necessary to have astrong material. The thickness may be all the Way from a quarter ofan'inch to an inch, although the particular size has notlr ing to dowith the invention, the dimensions herein given beingmerely toillustrate the purposes for which this composition of matter may bepeculiarly available.

It is a prime object of my invention to provide a material which whencompleted may be white, or very nearly White so that it does not requirefiiinting or enameling or any otherattention in order to changeitsinherent col0r. Likewise it is a prime object of my invention to providea material peculiarly susceptible to a novel treatment as set forth inPatent No. 1,085,227, issued Jan. 27, 1914, whereby this material ismade impervious to attack by the various articles that may be found in arefrigerator so that blood stains and other stains may be readilySpecification of Letters Patent.

Patented June 2? this.

Application filed March 4, 1512. Serial No. 681,820.

removed merely by washing, the material itself not absorbing theconstituents of the stain so that the material may remain white as isnecessary for a proper con'nnercial article.

I find that the material whose constituents Powdered calcined magnesite233L9 2, Powdered glass lG-;l% Powdered quartz 1 165-91; Marble dust161,6? Feldspar 14 721 Light calcined magnesia 35% instead of usingfeldspar I may even have a whiter substance if I use marble flour. Tlabove mixture is then suitably mixed with sullicicnt magnesium chloridsolution of 5/10 Bunnie density to form a thick cream. \Vhcu thesematerials are mixed cmisiderable heat is given off indicating chemicalaction between the various constituents. The reaction involved is a moreor less complex one between the magnesilun chlorid and the magnesiumoxid of the mix, yielding insoluble magnesium oxychlorid. The othermaterials or n'iineral mattenof the mix, such as the siliceous anCcalcareous constituents, may be considered as wholly, or mainly, inertfillers intimately cemented together by the oxychlorid precipitated intion described, do not have to be polished or o'tl'ierwise treated todevelop a surface 'of' The surface 7 the necessary smoothness.formed'simply H1 the setting" of the material is substantially glazed orenameLwhite in character. The material also has the neces sary strengthand rigidity and lendsitself readily .to treatment to render the sameimpervious to attack of substances normally Jlaced in the refri erator.

The solid raw materials of the mix'being in' finely powdered form, andthe insoluble magnesium oxychlorid resulting from theaddition of theinagnesiurn ohlorid being also in an extremely finely divided condition,the final product is a substantially white artificial stone of uniformlyfine grain and homogeneity of oompos'ition. Substantial freedom fromsoluble constituents is also.

' an advantageous characteristic of the dense stone-like product thusobtained, -particullarly where it-is used in refrigerator linings.- orin other locations involving exposure to moisture.

ieeew Naturally the constituents roayihe varied to some extent for theparticular purposes set forth, or equivalents used and still oh'- tainthe same result.

- Having, however, thus descr bed one par-'- similar manner of carryingout my inven.. t1on,,what I claim as new and desire to securebyLetters-Patent-is; c

As a new article of manufacture, ashaped body set from a semi-fluentmass resultmg from. the "admixture of magnesium ohlorid 332 72 calcinedI EDNA KLABuNDE, W ll. MoREYNoLns.

